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Kimura T, Rahmani R, Miyamoto T, Kamio Y, Kudo D, Sato H, Ikedo T, Baranoski JF, Uchikawa H, Ai J, Lawton MT, Hashimoto T. Vitamin D deficiency promotes intracranial aneurysm rupture. J Cereb Blood Flow Metab 2024; 44:1174-1183. [PMID: 38241458 PMCID: PMC11179614 DOI: 10.1177/0271678x241226750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 10/18/2023] [Accepted: 11/29/2023] [Indexed: 01/21/2024]
Abstract
Intracranial aneurysm rupture causes severe disability and high mortality. Epidemiological studies show a strong association between decreased vitamin D levels and an increase in aneurysm rupture. However, the causality and mechanism remain largely unknown. In this study, we tested whether vitamin D deficiency promotes aneurysm rupture and examined the underlying mechanism for the protective role of vitamin D against the development of aneurysm rupture utilizing a mouse model of intracranial aneurysm. Mice consuming a vitamin D-deficient diet had a higher rupture rate than mice with a regular diet. Vitamin D deficiency increased proinflammatory cytokines in the cerebral arteries. Concurrently, vitamin D receptor knockout mice had a higher rupture rate than the corresponding wild-type littermates. The vitamin D receptors on endothelial and vascular smooth muscle cells, but not on hematopoietic cells, mediated the effect of aneurysm rupture. Our results establish that vitamin D protects against the development of aneurysmal rupture through the vitamin D receptors on vascular endothelial and smooth muscle cells. Vitamin D supplementation may be a viable pharmacologic therapy for preventing aneurysm rupture.
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MESH Headings
- Animals
- Vitamin D Deficiency/complications
- Intracranial Aneurysm/etiology
- Mice
- Aneurysm, Ruptured/etiology
- Mice, Knockout
- Receptors, Calcitriol/metabolism
- Receptors, Calcitriol/genetics
- Receptors, Calcitriol/deficiency
- Vitamin D/therapeutic use
- Vitamin D/blood
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Cytokines/metabolism
- Mice, Inbred C57BL
- Male
- Disease Models, Animal
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
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Affiliation(s)
- Tetsuro Kimura
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, USA
| | - Redi Rahmani
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, USA
- Department of Neurosurgery, University of Rochester Medical Center, Rochester, NY, USA
| | - Takeshi Miyamoto
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, USA
| | - Yoshinobu Kamio
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, USA
| | - Daisuke Kudo
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, USA
| | - Hiroki Sato
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, USA
| | - Taichi Ikedo
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, USA
| | - Jacob F Baranoski
- Department of Neurosurgery, Barrow Neurological Institute, Phoenix, Arizona, USA
| | - Hiroki Uchikawa
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, USA
| | - Jinglu Ai
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, USA
| | - Michael T Lawton
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, USA
- Department of Neurosurgery, Barrow Neurological Institute, Phoenix, Arizona, USA
| | - Tomoki Hashimoto
- Barrow Aneurysm and AVM Research Center, Barrow Neurological Institute, Phoenix, Arizona, USA
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Hewedy WA, Abdulmalek SA, Ghareeb DA, Habiba ES. AMPK-mediated autophagy is involved in the protective effect of canagliflozin in the vitamin D3 plus nicotine calcification model in rats. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024; 397:873-888. [PMID: 37522915 PMCID: PMC10791829 DOI: 10.1007/s00210-023-02627-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 07/12/2023] [Indexed: 08/01/2023]
Abstract
Vascular calcification (VC) is a major risk factor for cardiovascular events. A mutual interplay between inflammation, oxidative stress, apoptosis, and autophagy is implicated in its development. Herein, we aimed to evaluate the potential protective effects of canagliflozin in a vitamin D3 plus nicotine (VDN) model of VC, and to explore potential mechanisms. VC was induced by VDN in adult male Wistar rats on day one. Then, rats were randomly assigned into three groups to receive canagliflozin (10 mg or 20 mg/kg/day) or its vehicle for 4 weeks. Age-matched normal rats served as a control group. After euthanization, aorta and kidneys were harvested for biochemical and histopathological evaluation of calcification. Aortic markers of oxidative stress, alkaline phosphatase (ALP) activity, runt-related transcription factor (Runx2) and bone morphogenic protein-2 (BMP-2) levels were determined. Additionally, the protein expression of autophagic markers, LC3 and p62, and adenosine monophosphate activated protein kinase (AMPK) were also assessed in aortic homogenates. Canagliflozin dose-dependently improved renal function, enhanced the antioxidant capacity of aortic tissues and reduced calcium deposition in rat aortas and kidneys. Both doses of canagliflozin attenuated ALP and osteogenic markers while augmented the expression of autophagic markers and AMPK. Histopathological examination of aortas and kidneys by H&E and Von Kossa stain further support the beneficial effect of canagliflozin. Canagliflozin could alleviate VDN-induced vascular calcification, in a dose dependent manner, via its antioxidant effect and modulation of autophagy. Further studies are needed to verify whether this effect is a member or a class effect.
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Affiliation(s)
- Wafaa A Hewedy
- Clinical Pharmacology Department, Faculty of Medicine, Alexandria University, Alexandria, Egypt.
- Al-Moassat Medical Campus, Elhadara, Clinical Pharmacology Department, Faculty of Medicine, Alexandria University, 21561, Alexandria, Egypt.
| | - Shaymaa A Abdulmalek
- Bio-Screening and Preclinical Trial Lab, Biochemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Doaa A Ghareeb
- Bio-Screening and Preclinical Trial Lab, Biochemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Esraa S Habiba
- Clinical Pharmacology Department, Faculty of Medicine, Alexandria University, Alexandria, Egypt
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3
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Hang X, Yu X, Fan S. Lower extremity arterial plaque in patients with type 2 diabetes mellitus: A cross-sectional study of 25-(OH)D 3 and other risk factors. J Diabetes Complications 2024; 38:108665. [PMID: 38103536 DOI: 10.1016/j.jdiacomp.2023.108665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 11/26/2023] [Accepted: 12/09/2023] [Indexed: 12/19/2023]
Abstract
OBJECTIVE The occurrence of chronic vascular complications in individuals with type 2 diabetes mellitus(T2DM) is influenced by multiple factors. This study aims to analyze the correlation between serum 25-(OH)D3 levels and other risk factors with the formation and severity of arterial plaques in the lower extremities, and explore its role in clinical diagnosis and treatment. METHODS A total of 628 Chinese patients with T2DM were included in this study. Based on the intima-media thickness (IMT) and plaque echogenicity measured by lower extremity vascular ultrasound, the patients were divided into the no plaque group(NP), low-risk plague group(LP), moderate-risk plague group(MP), and severe-risk plague group(SP). Based on 25-(OH)D3 levels, patients were categorized as vitamin D deficient group (VDD,25-(OH)D3 ≤ 20 ng/mL), vitamin D insufficient group (VDI,25-(OH)D3 between>20 ng/mL and < 30 ng/mL), and vitamin D sufficient group (VDS,25-(OH)D3 ≥ 30 ng/mL). The correlation between the severity of lower extremity arterial plaques and serum 25-(OH)D3 levels was analyzed, as well as the risk factors for lower extremity arterial plaque formation in patients with T2DM. RESULTS The levels of 25-(OH)D3 in patients with arterial plaques were significantly lower than those in the NP (p = 0.002). Additionally, with the increasing severity of lower extremity arterial plaques, 25-(OH)D3 levels also decreased significantly (p = 0.01). The proportion of patients with sufficient 25-(OH)D3 levels was highest in NP, while the proportion of deficient and insufficient groups was higher in LP (p<0.001). Multivariate logistic regression analysis showed that low levels of 25-(OH)D3 were an independent risk factor for lower extremity arterial plaques in T2DM patients. Compared to patients with 25-(OH)D3>20 ng/mL, the odds ratios for the formation of moderate-risk plaques were 2.525 (95 % CI: 1.45-4.39) in patients with 25-(OH)D3 ≤ 20 ng/mL, and 2.893 (95 % CI: 1.59-5.26) for the formation of high-risk plaques. CONCLUSION Serum 25-(OH)D3 levels may be correlated with the occurrence and severity of lower extremity arterial plaques in patients with T2DM. Low serum 25-(OH)D3 concentration is a risk factor for lower extremity vascular lesions.
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Affiliation(s)
- Xuechun Hang
- Department of Endocrinology and Metabolic Disease, China Medical University, Postgraduate Training Base (Liaoyang Central Hospital), Liaoyang, China
| | - Xiaohua Yu
- Department of Endocrinology and Metabolic Disease, Liaoyang Central Hospital, Liaoyang 111000, China.
| | - Shengyu Fan
- Department of Medical Imaging, Jinzhou Medical University, Postgraduate Training Base (Liaoyang Central Hospital), Liaoyang, China
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Molinuevo MS, Cortizo AM, Sedlinsky C. Effects of advanced glycation end-products, diabetes and metformin on the osteoblastic transdifferentiation capacity of vascular smooth muscle cells: In vivo and in vitro studies. J Diabetes Complications 2023; 37:108626. [PMID: 37839167 DOI: 10.1016/j.jdiacomp.2023.108626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 09/27/2023] [Accepted: 10/02/2023] [Indexed: 10/17/2023]
Abstract
AIMS Our objective was to study the vascular smooth muscle cells (VSMC) osteoblastic transdifferentiation in AGE exposed cells or those from diabetic animals, and its response to metformin treatment. METHODS VSMC were obtained from non-diabetic rats, grown with or without AGE; while VSMC of in vivo-ex vivo studies were obtained from non-diabetic control animals (C), diabetic (D), C treated with metformin (M) and D treated with metformin (D-M). We studied the osteoblastic differentiation by evaluating alkaline phosphatase (ALP), type I collagen (Col) and mineral deposit. RESULTS In vitro, AGE increased proliferation, migration, and osteoblastic differentiation of VSMC. Metformin cotreatment prevented the AGE induced proliferation and migration. Both AGE and metformin stimulated the expression of ALP and Col. AGE induced mineralization was prevented by metformin. VSMC from D expressed a higher production of Col and ALP. Those from D-M showed an ALP increase vs C and M, and a partial decrease vs D. Cultured in osteogenic medium, ALP, Col and mineralization increased in D vs C, remained unchanged in M, and were prevented in D-M animals. CONCLUSION Both AGE and DM favor VSMC differentiation towards the osteogenic phenotype and this effect can be prevented by metformin.
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Affiliation(s)
- María Silvina Molinuevo
- Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral UNLP-CICPBA, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 50 y 115, 1900 La Plata, Argentina
| | - Ana María Cortizo
- Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral UNLP-CICPBA, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 50 y 115, 1900 La Plata, Argentina.
| | - Claudia Sedlinsky
- Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral UNLP-CICPBA, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 50 y 115, 1900 La Plata, Argentina.
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5
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Surdu AM, Pînzariu O, Ciobanu DM, Negru AG, Căinap SS, Lazea C, Iacob D, Săraci G, Tirinescu D, Borda IM, Cismaru G. Vitamin D and Its Role in the Lipid Metabolism and the Development of Atherosclerosis. Biomedicines 2021; 9:172. [PMID: 33572397 PMCID: PMC7916166 DOI: 10.3390/biomedicines9020172] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 02/04/2021] [Accepted: 02/04/2021] [Indexed: 12/12/2022] Open
Abstract
Vitamin D, a crucial hormone in the homeostasis and metabolism of calcium bone, has lately been found to produce effects on other physiological and pathological processes genomically and non-genomically, including the cardiovascular system. While lower baseline vitamin D levels have been correlated with atherogenic blood lipid profiles, 25(OH)D supplementation influences the levels of serum lipids in that it lowers the levels of total cholesterol, triglycerides, and LDL-cholesterol and increases the levels of HDL-cholesterol, all of which are known risk factors for cardiovascular disease. Vitamin D is also involved in the development of atherosclerosis at the site of the blood vessels. Deficiency of this vitamin has been found to increase adhesion molecules or endothelial activation and, at the same time, supplementation is linked to the lowering presence of adhesion surrogates. Vitamin D can also influence the vascular tone by increasing endothelial nitric oxide production, as seen in supplementation studies. Deficiency can lead, at the same time, to oxidative stress and an increase in inflammation as well as the expression of particular immune cells that play a pivotal role in the development of atherosclerosis in the intima of the blood vessels, i.e., monocytes and macrophages. Vitamin D is also involved in atherogenesis through inhibition of vascular smooth muscle cell proliferation. Furthermore, vitamin D deficiency is consistently associated with cardiovascular events, such as myocardial infarction, STEMI, NSTEMI, unstable angina, ischemic stroke, cardiovascular death, and increased mortality after acute stroke. Conversely, vitamin D supplementation does not seem to produce beneficial effects in cohorts with intermediate baseline vitamin D levels.
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Affiliation(s)
- Andrei Mihai Surdu
- Fifth Department of Internal Medicine, Cardiology Clinic, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania
| | - Oana Pînzariu
- Sixth Department of Medical Specialties, Endocrinology, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania;
| | - Dana-Mihaela Ciobanu
- Sixth Department of Medical Specialties, Diabetes and Nutritional Diseases, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania;
| | - Alina-Gabriela Negru
- Cardiology Department, “Victor Babes” University of Medicine and Pharmacy, 300041 Timișoara, Romania;
| | - Simona-Sorana Căinap
- Pediatric Clinic No 2, Cardiology Department, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania;
| | - Cecilia Lazea
- Pediatric Clinic No 1, Cardiology Department, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania;
| | - Daniela Iacob
- Pediatric Clinic No 3, Cardiology Department, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania;
| | - George Săraci
- Internal Medicine Department, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania;
| | - Dacian Tirinescu
- Sixth Department of Medical Specialties, Nephrology, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania;
| | - Ileana Monica Borda
- Sixth Department of Medical Specialties, Medical Rehabilitation, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania;
| | - Gabriel Cismaru
- Fifth Department of Internal Medicine, Cardiology-Rehabilitation, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania;
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6
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Amer AE, El-Sheakh AR, Hamed MF, El-Kashef HA, Nader MA, Shehatou GSG. Febuxostat attenuates vascular calcification induced by vitamin D3 plus nicotine in rats. Eur J Pharm Sci 2020; 156:105580. [PMID: 33010420 DOI: 10.1016/j.ejps.2020.105580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 09/26/2020] [Accepted: 09/27/2020] [Indexed: 11/30/2022]
Abstract
This study was undertaken to investigate the possible ameliorative influences of febuxostat (FEB) on vitamin D3 plus nicotine (VDN)-induced vascular calcification (VC) in Wistar rats. VDN rats received a single dose of vitamin D3 (300.000 IU/kg, I.M) and two oral doses of nicotine (25 mg/kg) on day 1. They were then administrated FEB, in two doses (10 and 15 mg/kg/day, orally), or the drug vehicle, for 4 weeks. Age-matched normal rats served as control. At the end of the experiment, body weight, kidney function parameters, serum ionic composition, cardiovascular measures, aortic calcium deposition and aortic levels of oxidative stress markers, interleukin 1β (IL-1β), runt-related transcription factor 2 (Runx2) and osteopontin (OPN) were determined. Aortic immunoexpressions of tumor necrosis factor-α (TNF-α), inducible nitric oxide synthase (iNOS), matrix metalloproteinase-9 (MMP-9) and α-smooth muscle actin (α-SMA) were evaluated. FEB significantly restored body weight loss, ameliorated kidney function and diminished serum disturbances of calcium and phosphorus in VDN rats. Moreover, FEB reduced VDN-induced elevations in aortic calcium deposition, SBP and DBP. FEB (15 mg/kg) markedly decreased left ventricular hypertrophy and bradycardia in VDN group. Mechanistically, FEB dose-dependently improved oxidative damage, decreased levels of IL-1β and Runx2, lessened expression of TNF-α, iNOS and MMP-9 and enhanced expression of OPN and α-SMA in VDN aortas relative to controls. These findings indicate that FEB, mainly at the higher administered dose (15 mg/kg), successfully attenuated VDN-induced VC. FEB may be useful in reducing VC in patients at high risk, including those with chronic kidney disease and diabetes mellitus.
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Affiliation(s)
- Ahmed E Amer
- Department of Pharmacology and Biochemistry, Faculty of Pharmacy, Delta University for Science and Technology, International Coastal Road, Gamasa City, Dakahliya, Egypt; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Dakahliya, Egypt
| | - Ahmed R El-Sheakh
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Dakahliya, Egypt
| | - Mohamed F Hamed
- Department of Pathology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Dakahliya, Egypt
| | - Hassan A El-Kashef
- Department of Pharmacology and Biochemistry, Faculty of Pharmacy, Delta University for Science and Technology, International Coastal Road, Gamasa City, Dakahliya, Egypt; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Dakahliya, Egypt
| | - Manar A Nader
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Dakahliya, Egypt
| | - George S G Shehatou
- Department of Pharmacology and Biochemistry, Faculty of Pharmacy, Delta University for Science and Technology, International Coastal Road, Gamasa City, Dakahliya, Egypt; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Dakahliya, Egypt.
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7
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Radagdam S, Asoudeh-Fard A, Karimi MA, Faridvand Y, Gholinejad Z, Gerayesh Nejad S. Calcitriol modulates cholesteryl ester transfer protein (CETP) levels and lipid profile in hypercholesterolemic male rabbits: A pilot study. INT J VITAM NUTR RES 2019; 91:212-216. [PMID: 31842709 DOI: 10.1024/0300-9831/a000613] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Vitamin D3 efficacy against cardiovascular disease prevention has been reported in many experimental studies. We aimed to investigate the effect of the calcitriol or active form of Vitamin D3 (1, 25(OH) 2D3) on serum cholesteryl ester transfer protein (CETP) levels in a rabbit model of atherosclerosis. New Zealand white male rabbits were fed with 1% cholesterol diet and randomly assigned into two groups (n = 6). The case group was administrated with 50000 calcitriol (IU/kg/per wk) and the control group which administrated with calcitriol solvent (sesame oil) for 2 months. Then, after two months the lipid profile, CETP and 25OHD3 levels were measured. The serum concentration of CETP was increased after treatment with calcitriol in case group as compared to the control group (41.75 ± 3.19 vs. 34.5 ± 2.3, ng/ml, P < 0.05). We also observed higher levels of the 25OHD3 in the calcitriol group at the 1st month (16.3 ± 1.64 vs. 12.8 ± 1.33 ng/ml) and the 2nd month (19.5 ± 2.14 vs. 12.5 ± 1.25 ng/ml) as compared with the control group. the significant increase in the level of HDL-C was observed in the case group than the control group (P < 0.01). In addition, serum levels of LDL- Cholesterol (LDL-C), Triglyceride (TG) were reduced after assessment at 1st and 2nd month after administration of calcitriol. Our research indicated the significant anti-atherogenic effects of calcitriol in the rabbit model of atherosclerosis. However, increased in CETP levels by calcitriol may know as an additional way, which interfere with the anti-atherogenic effects of calcitriol.
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Affiliation(s)
- Saeed Radagdam
- Department of Clinical Biochemistry, Tehran University of Medical Sciences, Tehran, Iran.,Department of Biochemistry and Clinical Laboratories, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Abbas Asoudeh-Fard
- INSERM U1148, Laboratory for Vascular Translational Science, Cardiovascular Bioengineering, Paris 13 University, Sorbonne Paris, France.,Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad-Ali Karimi
- Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Yousef Faridvand
- Department of Biochemistry and Clinical Laboratories, Tabriz University of Medical Sciences, Tabriz, Iran.,Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zafar Gholinejad
- Department of Clinical Biochemistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Siavash Gerayesh Nejad
- Department of Clinical Biochemistry, Tehran University of Medical Sciences, Tehran, Iran
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8
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Razzaque MS. Can adverse effects of excessive vitamin D supplementation occur without developing hypervitaminosis D? J Steroid Biochem Mol Biol 2018; 180:81-86. [PMID: 28734988 DOI: 10.1016/j.jsbmb.2017.07.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 07/03/2017] [Accepted: 07/08/2017] [Indexed: 12/25/2022]
Abstract
Vitamin D is a fat-soluble hormone that has endocrine, paracrine and autocrine functions. Consumption of vitamin D-supplemented food & drugs have increased significantly in the last couple of decades due to campaign and awareness programs. Despite such wide use of artificial vitamin D supplements, serum level of 25 hydroxyvitamin D does not always reflect the amount of uptake. In contrast to the safe sunlight exposure, prolonged and disproportionate consumption of vitamin D supplements may lead to vitamin D intoxication, even without developing hypervitaminosis D. One of the reasons why vitamin D supplementation is believed to be safe is, it rarely raises serum vitamin D levels to the toxic range even after repeated intravenous ingestion of extremely high doses of synthetic vitamin D analogs. However, prolonged consumption of vitamin D supplementation may induce hypercalcemia, hypercalciuria and hyperphosphatemia, which are considered to be the initial signs of vitamin D intoxication. It is likely that calcium and phosphorus dysregulation, induced by exogenous vitamin D supplementation, may lead to tissue and organ damages, even without developing hypervitaminosis D. It is needed to be emphasized that, because of tight homeostatic control of calcium and phosphorus, when hypercalcemia and/or hyperphosphatemia is apparent following vitamin D supplementation, the process of tissue and/or organ damage might already have been started.
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Affiliation(s)
- Mohammed S Razzaque
- Department of Applied Oral Sciences, Forsyth Institute, Cambridge, MA, USA; Department of Preventive & Community Dentistry, School of Dentistry, University of Rwanda College of Medicine & Health Sciences, Kigali, Rwanda; Department of Oral Health Policy & Epidemiology, Harvard School of Dental Medicine, Boston, MA, USA; Department of Pathology, Lake Erie College of Osteopathic Medicine, Erie, PA, USA.
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9
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Jamali N, Sorenson CM, Sheibani N. Vitamin D and regulation of vascular cell function. Am J Physiol Heart Circ Physiol 2017; 314:H753-H765. [PMID: 29351464 DOI: 10.1152/ajpheart.00319.2017] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Vitamin D deficiency is linked to pathogenesis of many diseases including cardiovascular, cancer, and various eye diseases. In recent years, important roles for vitamin D in regulation of immune function, inflammation, angiogenesis, and aging have been demonstrated. Thus, vitamin D and its analogs have been evaluated for the treatment of various types of cancer and chronic diseases. We have previously shown that the active form of vitamin D [1,25(OH)2D3] is a potent inhibitor of angiogenesis. This activity is consistent with the important role proposed for vitamin D and its analogs in the mitigation of tumor growth through inhibition of angiogenesis. Here, we review the important nutritional value of vitamin D and the abnormalities linked to its deficiency. We will explore its potential role as a regulator of angiogenesis and vascular cell function and the role vitamin D receptor (VDR) expression plays in these activities during vascular development and neovascularization. Our studies have established an important role for 1,25(OH)2D3 and VDR in the regulation of perivascular supporting cell function. In addition, the interaction of 1,25(OH)2D3 and VDR is essential for these activities and inhibition of neovascularization. Delineating the signaling pathways involved and identification of genes that are the target of 1,25(OH)2D3 regulation in vascular cells will allow us to identify novel pathways that are targets for regulation of vascular function and angiogenesis.
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Affiliation(s)
- Nasim Jamali
- Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health , Madison, Wisconsin.,McPherson Eye Research Institute, University of Wisconsin School of Medicine and Public Health , Madison, Wisconsin
| | - Christine M Sorenson
- McPherson Eye Research Institute, University of Wisconsin School of Medicine and Public Health , Madison, Wisconsin.,Department of Pediatrics, University of Wisconsin School of Medicine and Public Health , Madison, Wisconsin
| | - Nader Sheibani
- Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health , Madison, Wisconsin.,McPherson Eye Research Institute, University of Wisconsin School of Medicine and Public Health , Madison, Wisconsin.,Department of Cell and Regenerative Biology, University of Wisconsin School of Medicine and Public Health , Madison, Wisconsin.,Department of Biomedical Engineering, University of Wisconsin School of Medicine and Public Health , Madison, Wisconsin
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10
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Xiang W, Liao W, Yi Z, He X, Ding Y. 25-Hydroxyvitamin D-1-α-hydroxylase in apoliporotein E knockout mice: The role of protecting vascular smooth muscle cell from calcification. Biomed Pharmacother 2017; 88:971-977. [PMID: 28178628 DOI: 10.1016/j.biopha.2017.01.093] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2016] [Revised: 01/11/2017] [Accepted: 01/15/2017] [Indexed: 02/02/2023] Open
Abstract
Previous publications widely reported that 25-hydroxyvitamin D-1-α-hydroxylase (CYP27B1) regulated the metabolism of 25-hydroxyvitamin D3, which has a close association between altered activity of vitamin D and vascular calcification has been reported in various human diseases, including chronic kidney disease, osteoporosis and atherosclerosis. Vascular calcification is a clinically significant component of atherosclerosis and may be promoted by ROS associated inflammatory. In this study, we evaluated the effect of 25-hydroxyvitamin D-1-α-hydroxylase on the atherosclerosis disease both in apolipoprotein (apo) E-/- mice and wild-type mice. We also isolated endothelial cell (ECs) and vascular smooth muscle cells (VSMCs) in aortic from the wild type mice and apoE-/- mice respectively, then investigated that after parathyroid hormone (PTH) both of the CYP27B1 and vitamin D receptor (VDR) expressions in apoE-/-EC and apoE-/-VSMC were higher than the wide-type EC and VSMCs. However, the increased proliferation and decreased apoptosis have showed in EC and VSMC compared with the cells from apo E-/- mice. Moreover, the index associated with vascular calcification such as intracellular Ca2+ concentration and alkaline phosphatase (ALP) activity have been tested and the result suggested that the levels of the former index have improved in the apoE-/-EC and apoE-/-VSMC. We got similar conclusions under the pre-treatment with 1, 25(OH) 2D3.
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Affiliation(s)
- Wei Xiang
- Department of Pediatrics, Hainan General Hospital, Haikou 570102, China; Department of Pediatrics, Maternal and Child Health care Hospital of Hainan Province, Haikou 570206, China
| | - Wang Liao
- Department of Cardiology, Hainan General Hospital, Haikou 570102, China
| | - Zhuwen Yi
- Department of Nephropathy, Children's Medical Center, The Second Xiangya Hospital, Central South University, Changsha, 410000, China
| | - Xiaojie He
- Department of Nephropathy, Children's Medical Center, The Second Xiangya Hospital, Central South University, Changsha, 410000, China.
| | - Yan Ding
- Department of Dermatology, Maternal and Child Health care Hospital of Hainan Province,15 Long Kun-Nan Road, Haikou 570206, China.
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11
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Kain K. Screening for vitamin D deficiency. Ann Intern Med 2015; 162:737. [PMID: 25984859 DOI: 10.7326/l15-5094-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Kirti Kain
- From University of Leeds, Leeds, United Kingdom
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12
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Somjen D, Knoll E, Sharon O, Many A, Stern N. Calciotrophic hormones and hyperglycemia modulate vitamin D receptor and 25 hydroxyy vitamin D 1-α hydroxylase mRNA expression in human vascular smooth muscle cells. J Steroid Biochem Mol Biol 2015; 148:210-3. [PMID: 25448744 DOI: 10.1016/j.jsbmb.2014.11.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2014] [Revised: 10/30/2014] [Accepted: 11/07/2014] [Indexed: 11/17/2022]
Abstract
Estrogen receptors (ERα and ERβ), the vitamin D receptor (VDR) and 25 hydroxyy vitamin D 1-α hydroxylase (1OHase) mRNA are expressed in vascular smooth muscle cells (VSMC). In these cells estrogenic hormones modulate cell proliferation as measured by DNA synthesis (DNA). In the present study we determined whether or not the calciotrophic hormones PTH 1-34 (PTH) and less- calcemic vitamin D analog QW as well as hyperglycemia can regulate DNA synthesis and CK. E2 had a bimodal effect on VSMC DNA synthesis, such that proliferation was inhibited at 30nM but stimulated at 0.3nM. PTH at 50nM increased, whereas QW at 10nM inhibited DNA synthesis. Hyperglycemia inhibited the effects on high E2, QW and PTH on DNA only. Both QW and PTH increased ERα mRNA expression, but only PTH increased ERβ expression. Likewise, both PTH and QW stimulated VDR and 1OHase expression and activity. ERβ, VDR and 1OHase expression and activity were inhibited by hyperglycemia, but ERα expression was unaffected by hyperglycemia. In conclusion, calcitrophic hormones modify VSMC growth and concomitantly affect ER expression in these cells as well as the endogenous VSMC vitamin D system elements, including VDR and 1OHase. Some of the later changes may likely participate in growth effects. Of importance in the observation is that several regulatory effects are deranged in the presence of hyperglycemia, particularly the PTH- and vitamin D-dependent up regulation of VDR and 1OHase in these cells. The implications of these effects require further studies. This article is part of a Special Issue entitled '17th Vitamin D Workshop'.
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Affiliation(s)
- D Somjen
- Institute of Endocrinology, Metabolism and Hypertension Tel- Aviv Sourasky Medical Centre and Sackler Faculty of Medicine, Tel- Aviv University, Tel- Aviv 64239, Israel.
| | - E Knoll
- Institute of Endocrinology, Metabolism and Hypertension Tel- Aviv Sourasky Medical Centre and Sackler Faculty of Medicine, Tel- Aviv University, Tel- Aviv 64239, Israel
| | - O Sharon
- Institute of Endocrinology, Metabolism and Hypertension Tel- Aviv Sourasky Medical Centre and Sackler Faculty of Medicine, Tel- Aviv University, Tel- Aviv 64239, Israel
| | - A Many
- Institute of Endocrinology, Metabolism and Hypertension Tel- Aviv Sourasky Medical Centre and Sackler Faculty of Medicine, Tel- Aviv University, Tel- Aviv 64239, Israel
| | - N Stern
- Institute of Endocrinology, Metabolism and Hypertension Tel- Aviv Sourasky Medical Centre and Sackler Faculty of Medicine, Tel- Aviv University, Tel- Aviv 64239, Israel
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13
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Somjen D, Kulesza U, Sharon O, Knoll E, Stern N. New vitamin D less-calcemic analog affect human bone cell line and cultured vascular smooth muscle cells similar to other less-calcemic analogs. J Steroid Biochem Mol Biol 2014; 140:1-6. [PMID: 24269661 DOI: 10.1016/j.jsbmb.2013.11.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Revised: 10/30/2013] [Accepted: 11/11/2013] [Indexed: 11/28/2022]
Abstract
Primary cultures of human bone and vascular cells respond to vitamin D treatment by modulation of cell proliferation measured by DNA synthesis (DNA) and energy metabolism measured by creatine kinase specific activity (CK) via binding to vitamin D receptors (VDR) which are expressed in these cells. Vitamin D compounds also modulate the response to estradiol-17β (E₂) and the expression mRNAs of estrogen receptors (ERα and ERβ), VDR, 25-hydroxy vitamin D₃ 1-α hydroxylase (1OHase) and lipoxygenases (12LO and 15LO). We now compared our newly synthesized analog: 1α,25-dihydroxy-9-methylene-19-norvitamin D₃ JK152 (JK), on bone and vascular cells compared to other analogs. Human bone cell line SaOS₂ respond to JK by increased DNA and stimulated CK dose-dependently, similar to the less-calcemic analogs CB 1093 (CB) and EB 1089 (EB). JK also up-regulated the response to E₂ in terms of DNA and CK. JK inhibited DNA synthesis and increased CK in primary human vascular smooth muscle cells (VSMC) dose-dependently similar to EB and CB. JK up regulated the response to E₂ in terms of CK with no effect on DNA. JK similar to CB and EB stimulated mRNA expression of VDR and ERα, 12LO and 15LO, with no effect on ERβ and 1OHase mRNA expression in SaOS₂ measured by real time PCR. Similar treatments of VSMC with JK, CB and EB stimulated 12LO and 15LO, VDR and ERα mRNA expression with no effect on ERβ and 1OHase mRNA expression. The results presented here demonstrate that the new vitamin D less-calcemic analog JK is similar to other analogs in its effects on human cultured cells and therefore may be used in combined hormone replacement treatment (HRT) both in vitro and in vivo.
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Affiliation(s)
- D Somjen
- Institute of Endocrinology, Metabolism and Hypertension, Tel-Aviv Sourasky Medical Center and the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
| | - U Kulesza
- Department of Chemistry, University of Warsaw, Warsaw, Poland
| | - O Sharon
- Institute of Endocrinology, Metabolism and Hypertension, Tel-Aviv Sourasky Medical Center and the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - E Knoll
- Institute of Endocrinology, Metabolism and Hypertension, Tel-Aviv Sourasky Medical Center and the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - N Stern
- Institute of Endocrinology, Metabolism and Hypertension, Tel-Aviv Sourasky Medical Center and the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
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14
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Jekl V, Redrobe S. Rabbit dental disease and calcium metabolism - the science behind divided opinions. J Small Anim Pract 2013; 54:481-90. [DOI: 10.1111/jsap.12124] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- V. Jekl
- Avian and Exotic Animal Clinic, Faculty of Veterinary Medicine; University of Veterinary and Pharmaceutical Sciences; Brno Czech Republic
| | - S. Redrobe
- Avian and Exotic Animal Clinic, Faculty of Veterinary Medicine; University of Veterinary and Pharmaceutical Sciences; Brno Czech Republic
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15
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Gupta GK, Agrawal T, Del Core MG, Hunter WJ, Agrawal DK. Decreased expression of vitamin D receptors in neointimal lesions following coronary artery angioplasty in atherosclerotic swine. PLoS One 2012; 7:e42789. [PMID: 22880111 PMCID: PMC3412822 DOI: 10.1371/journal.pone.0042789] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Accepted: 07/12/2012] [Indexed: 11/18/2022] Open
Abstract
Background Inflammatory cytokines, such as TNF-α, play a key role in the pathogenesis of occlusive vascular diseases. Activation of vitamin D receptors (VDR) elicits both growth-inhibitory and anti-inflammatory effects. Here, we investigated the expression of TNF-α and VDR in post-angioplasty coronary artery neointimal lesions of hypercholesterolemic swine and examined the effect of vitamin D deficiency on the development of coronary restenosis. We also examined the effect of calcitriol on cell proliferation and effect of TNF-α on VDR activity and expression in porcine coronary artery smooth muscle cells (PCASMCs) in-vitro. Methodology/Principal Findings Expression of VDR and TNF-α and the effect of vitamin D deficiency in post-angioplasty coronary arteries were analyzed by immunohistochemistry and histomorphometry. Cell proliferation was examined by thymidine and BrdU incorporation assays in cultured PCASMCs. Effect of TNF-α-stimulation on the activity and expression of VDR was analyzed by luciferase assay, immunoblotting and immunocytochemistry. In-vivo, morphometric analysis of the tissues revealed typical lesions with significant neointimal proliferation. Histological evaluation showed expression of smooth muscle α-actin and significantly increased expression of TNF-α in neointimal lesions. Interestingly, there was significantly decreased expression of VDR in PCASMCs of neointimal region compared to normal media. Indeed, post-balloon angioplasty restenosis was significantly higher in vitamin D-deficient hypercholesterolemic swine compared to vitamin D-sufficient group. In-vitro, calcitriol inhibited both serum- and PDGF-BB-induced proliferation in PCASMCs and TNF-α-stimulation significantly decreased the expression and activity of VDR in PCASMCs. Conclusions/Significance These data suggest that significant downregulation of VDR in proliferating smooth muscle cells in neointimal lesions could be due to atherogenic cytokines, including TNF-α. Vitamin D deficiency potentiates the development of coronary restenosis. Calcitriol has anti-proliferative properties in PCASMCs and these actions are mediated through VDR. This could be a potential mechanism for uncontrolled growth of neointimal cells in injured arteries leading to restenosis.
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Affiliation(s)
- Gaurav K. Gupta
- Department of Biomedical Sciences and Center for Clinical and Translational Science, Creighton University School of Medicine, Omaha, Nebraska, United States of America
| | - Tanupriya Agrawal
- Department of Biomedical Sciences and Center for Clinical and Translational Science, Creighton University School of Medicine, Omaha, Nebraska, United States of America
| | - Michael G. Del Core
- Department of Internal Medicine, Creighton University School of Medicine, Omaha, Nebraska, United States of America
| | - William J. Hunter
- Department of Pathology, Creighton University School of Medicine, Omaha, Nebraska, United States of America
| | - Devendra K. Agrawal
- Department of Biomedical Sciences and Center for Clinical and Translational Science, Creighton University School of Medicine, Omaha, Nebraska, United States of America
- Department of Internal Medicine, Creighton University School of Medicine, Omaha, Nebraska, United States of America
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, Nebraska, United States of America
- * E-mail:
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16
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Lin Y, Ubels JL, Schotanus MP, Yin Z, Pintea V, Hammock BD, Watsky MA. Enhancement of vitamin D metabolites in the eye following vitamin D3 supplementation and UV-B irradiation. Curr Eye Res 2012; 37:871-8. [PMID: 22632164 DOI: 10.3109/02713683.2012.688235] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE This study was designed to measure vitamin D metabolites in the aqueous and vitreous humor and in tear fluid, and to determine if dietary vitamin D3 supplementation affects these levels. We also determined if the corneal epithelium can synthesize vitamin D following UV-B exposure. METHODS Rabbits were fed a control or vitamin D3 supplemented diet. Pilocarpine-stimulated tear fluid was collected and aqueous and vitreous humor were drawn from enucleated eyes. Plasma vitamin D was also measured. To test for epithelial vitamin D synthesis, a human corneal limbal epithelial cell line was irradiated with two doses of UV-B (10 and 20 mJ/cm(2)/day for 3 days) and vitamin D was measured in control or 7-dehydrocholesterol treated culture medium. Measurements were made using mass spectroscopy. RESULTS 25(OH)-vitamin D3 and 24,25(OH)(2)-vitamin D3 increased significantly following D3 supplementation in all samples except vitreous humor. Tear fluid and aqueous humor had small but detectable 1,25(OH)(2)-vitamin D3 levels. Vitamin D2 metabolites were observed in all samples. Vitamin D3 levels were below the detection limit for all samples. Minimal vitamin D3 metabolites were observed in control and UV-B-irradiated epithelial culture medium except following 7-dehydrocholesterol treatment, which resulted in a UV-B-dose dependent increase in vitamin D3, 25(OH)-vitamin D3 and 24,25(OH)(2)-vitamin D3. CONCLUSIONS There are measurable concentrations of vitamin D metabolites in tear fluid and aqueous and vitreous humor, and oral vitamin D supplementation affects vitamin D metabolite concentrations in the anterior segment of the eye. In addition, the UV exposure results lead us to conclude that corneal epithelial cells are likely capable of synthesizing vitamin D3 metabolites in the presence of 7-dehydrocholesterol following UV-B exposure.
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Affiliation(s)
- Yanping Lin
- Department of Entomology & Cancer Center, University of California, Davis, CA, USA
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17
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Drueke TB, Massy ZA. Role of vitamin D in vascular calcification: bad guy or good guy? Nephrol Dial Transplant 2012; 27:1704-7. [DOI: 10.1093/ndt/gfs046] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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18
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Choi H, Myung K. Vitamin D₃ regulation of body fat, cytokines, and calpain gene expression. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2012; 92:632-637. [PMID: 25520983 DOI: 10.1002/jsfa.4622] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
BACKGROUND We conducted an in vivo experiment to determine whether vitamin D₃ acts as a fat synthesizer and/or meat tenderizer in mice. At 6 weeks of age, 20 male C57BL/6 wild-type mice were randomly divided into two groups (10 mice per group) and fed a modified AIN93G diet with (vitamin D₃ diet) or without (basal diet) 10 IU 25-OH-cholecalciferol kg⁻³ for 3 weeks. RESULTS When vitamin D₃ was fed to mice for 3 weeks, body fat was significantly increased compared to mice fed a basal diet. There was, however, no difference in body weight between the two groups. Vitamin D₃ increased the gene expressions of pro-inflammatory cytokines and peroxisome proliferator-activated receptor gamma, but decreased interleukin-15 in adipose tissue through nuclear vitamin D receptor and uncoupling protein-2 signals. The muscle inducible nitrate oxide synthase content of mice fed vitamin D₃ was higher than those fed a basal diet, while muscle arginase l showed a reverse phenomenon. longissimuss dorsi muscle of vitamin D₃-fed mice showed more severe fat deposition than those fed a basal diet. Vitamin D₃ amplified muscle u- and m-calpain protein content and suppressed muscle calpastatin protein content. CONCLUSION These findings suggest that vitamin D3 can be used as a fat synthesizer and meat tenderizer in meat-producing animals.
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Abstract
Vitamin D is a multifunctional hormone that can affect many essential biological functions, ranging from the immune regulation to mineral ion metabolism. A close association between altered activity of vitamin D and vascular calcification has been reported in various human diseases, including in patients with atherosclerosis, osteoporosis, and chronic kidney disease (CKD). Vascular calcification is a progressive disorder and is a major determinant of morbidity and mortality of the affected patients. Experimental studies have shown that excessive vitamin D activities can induce vascular calcification, and such vascular pathology can be reversed by reducing vitamin D activities. The human relevance of these experimental studies is not clear, as vitamin D toxicity is relatively rare in the general population. Contrary to the relationship between vitamin D and vascular calcification, in experimental uremic models, low levels of vitamin D were shown to be associated with extensive vascular calcification, a phenomenon that is very similar to the vascular pathology seen in patients with CKD. The current treatment approach of providing vitamin D analogs to patients with CKD often poses a dilemma, as studies linked vitamin D treatment to subsequent vascular calcification. Recent genetic studies, however, have shown that vascular calcification can be prevented by reducing serum phosphate levels, even in the presence of extremely high serum 1,25-dihydroxyvitamin D and calcium levels. This article will briefly summarize the dual effects of vitamin D in vascular calcification and will provide evidence of vitamin D-dependent and -independent vascular calcification.
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20
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Vitamin D receptor (VDR) polymorphisms in the cardiac variant of Gaucher disease. Pediatr Cardiol 2010; 31:30-2. [PMID: 19784695 DOI: 10.1007/s00246-009-9538-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2009] [Accepted: 09/10/2009] [Indexed: 10/20/2022]
Abstract
Type 3c Gaucher disease, an ultra-rare cardiac variant with progressive calcification of aortic and/or mitral heart valves, is generally fatal in teenage-hood. Vitamin D Receptors (VDR) are involved in calcium transport. The purpose of this pilot was to ascertain if VDR polymorphisms (BsmI, TaqI, ApaI, and FokI) are associated with type 3c Gaucher disease. There was a higher incidence of wild type alleles of all polymorphisms. Although a very small series, results seem to confirm preponderance of the BsmI B allele in type 3c as in other aortic calcifications, but also implicate linkage between ApaI and BsmI genotypes.
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Zhou YB, Jin SJ, Cai Y, Teng X, Chen L, Tang CS, Qi YF. Lanthanum acetate inhibits vascular calcification induced by vitamin D3 plus nicotine in rats. Exp Biol Med (Maywood) 2009; 234:908-17. [PMID: 19546357 DOI: 10.3181/0811-rm-346] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Lanthanum, a rare earth element, has been used to decrease serum phosphorus level in patients with chronic renal disease and hyperphosphatemia. We aimed to observe the effect and mechanism of two doses of lanthanum acetate (375 and 750 mg/kg/day) on vascular calcification induced by vitamin D3 plus nicotine treatment in rats for 4 weeks. As compared with control rats, rats with calcification showed widespread calcified nodules and irregular elastic fibers in calcified aorta on von Kossa calcium staining and increased aortic calcium and phosphorus contents, alkaline phosphatase (ALP) activity and bone-related protein expressions for osteopontin (OPN) and type III sodium dependent phosphate cotransporter Pit-1 (Pit-1). After treatment with either dose of lanthanum acetate, the calcified nodules and degree of irregular elastic fibers decreased in aortas. Lanthanum acetate at 750 mg/kg/day was more effective than 375 mg/kg/day in lessening vascular calcification by significantly reducing plasma phosphorus level, calcium x phosphorus product and ALP activity, by 30.3%, 28.6%, and 68.6%, respectively; reducing aortic phosphorus and calcium contents and ALP activity, by 48%, 53.1%, and 63.5% (all P < 0.01), respectively; reducing aortic mRNA level of OPN and Pit-1, by 55.8% (P < 0.01) and 38.8% (P < 0.05) and protein level of OPN and Pit-1, by 37.2% and 27.2% (both P < 0.01), respectively; and increasing carboxylated matrix Gla-protein (MGP) protein expression by 33.7% (P < 0.05), as compared with rats treated with vitamin D3 and nicotine alone. Lanthanum acetate could effectively inhibit the pathogenesis of vascular calcification.
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Affiliation(s)
- Ye-Bo Zhou
- Department of Physiology and Pathophysiology, Peking University Health Science Center, 38 Xueyuan Road, Haidian District, 100191, Beijing, China
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22
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Mizobuchi M, Ogata H, Koiwa F, Kinugasa E, Akizawa T. Vitamin D and vascular calcification in chronic kidney disease. Bone 2009; 45 Suppl 1:S26-9. [PMID: 19442619 DOI: 10.1016/j.bone.2009.01.011] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2008] [Revised: 12/13/2008] [Accepted: 01/06/2009] [Indexed: 01/02/2023]
Abstract
Vascular calcification is frequently observed and is closely associated with cardiovascular mortality in patients with chronic kidney disease (CKD). Vascular calcification is largely divided into two types. One is atherosclerotic intimal layer calcification and the other is medial layer calcification (Monckeberg's calcification). The latter is more common in patients with CKD than in general population. Evidence is growing that vascular calcification is a regulated active process as well as a passive process resulting from elevated serum phosphate (P) and an increase in the calcium phosphate (Ca x P) product leading to oversaturated plasma. Proving the active process, in vitro studies have demonstrated that the transformation of vascular smooth muscle cells (VSMCs) into osteoblast-like cells is a crucial mechanism in the progression of vascular calcification. Reduction of the activity of systemic and local inhibitors has also been recognized to be important. The link between vitamin D and vascular calcification is complex. Experimental and clinical researches have revealed that both vitamin D excess and vitamin D deficiency have been shown to be associated with vascular calcification in uremic milieu. On the other hand, although there are some biases, recent large observational studies have demonstrated that vitamin D has beneficial effects on the mortality of patients with CKD independent of serum Ca, P, and parathyroid hormone levels, likely due to its activation of the vitamin D receptor in vasculature and cardiac myocytes. Further prospective studies are necessary to evaluate the direct effect of vitamin D on vascular calcification in order to improve the cardiovascular health of patients with CKD.
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Affiliation(s)
- Masahide Mizobuchi
- Department of Nephrology, School of Medicine, Showa University, Tokyo, Japan.
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23
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Mizobuchi M, Towler D, Slatopolsky E. Vascular calcification: the killer of patients with chronic kidney disease. J Am Soc Nephrol 2009; 20:1453-64. [PMID: 19478096 DOI: 10.1681/asn.2008070692] [Citation(s) in RCA: 366] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Cardiovascular complications are the leading cause of death in patients with chronic kidney disease (CKD). Vascular calcification is a common complication in CKD, and investigators have demonstrated that the extent and histoanatomic type of vascular calcification are predictors of subsequent vascular mortality. Although research efforts in the past decade have greatly improved our knowledge of the multiple factors and mechanisms involved in vascular calcification in patients with kidney disease, many questions remain unanswered. No longer can we accept the concept that vascular calcification in CKD is a passive process resulting from an elevated calcium-phosphate product. Rather, as a result of the metabolic insults of diabetes, dyslipidemia, oxidative stress, uremia, and hyperphosphatemia, "osteoblast-like" cells form in the vessel wall. These mineralizing cells as well as the recruitment of undifferentiated progenitors to the osteochondrocyte lineage play a critical role in the calcification process. Important transcription factors such as Msx 2, osterix, and RUNX2 are crucial in the programming of osteogenesis. Thus, the simultaneous increase in arterial osteochondrocytic programs and reduction in active cellular defense mechanisms creates the "perfect storm" of vascular calcification seen in ESRD. Innovative clinical studies addressing the combined use of inhibitors that work on vascular calcification through distinct molecular mechanisms, such as fetuin-A, osteopontin, and bone morphogenic protein 7, among others, will be necessary to reduce significantly the accrual of vascular calcifications and cardiovascular mortality in kidney disease. In addition, the roles of oxidative stress and inflammation on the fate of smooth muscle vascular cells and their function deserve further translational investigation.
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Affiliation(s)
- Masahide Mizobuchi
- Department of Medicine, Renal Division, Washington University School of Medicine, St. Louis, MO 63110, USA
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Zittermann A, Koerfer R. Protective and toxic effects of vitamin D on vascular calcification: Clinical implications. Mol Aspects Med 2008; 29:423-32. [DOI: 10.1016/j.mam.2008.04.002] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2008] [Accepted: 04/23/2008] [Indexed: 01/09/2023]
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25
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Lightfoot TL, Yeager JM. Pet bird toxicity and related environmental concerns. Vet Clin North Am Exot Anim Pract 2008; 11:229-59, vi. [PMID: 18406386 DOI: 10.1016/j.cvex.2008.01.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Birds may be exposed to toxins through various sources in their everyday environment. Toxicity may occur through inhalation or oral or dermal exposures. Clinicians diagnose and treat these toxicities in an effort to correct the disease of the individual patient. Recognition of toxicity in the avian patient has further significance as it relates to the patient's environment, including the health of other animals, humans, and the ecosystem. While some toxicities, such as lead and zinc toxicosis, are well-documented in avian species, others are limited to anecdotal reports and extrapolation from other species. Continued research is needed in this area of avian medicine to expand our knowledge and improve our ability to diagnose and treat toxic conditions in birds.
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Affiliation(s)
- Teresa L Lightfoot
- Department of Avian and Exotic Medicine, Florida Veterinary Specialists, Tampa, FL 33614, USA.
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26
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Orita Y, Yamamoto H, Kohno N, Sugihara M, Honda H, Kawamata S, Mito S, Soe NN, Yoshizumi M. Role of osteoprotegerin in arterial calcification: development of new animal model. Arterioscler Thromb Vasc Biol 2007; 27:2058-64. [PMID: 17615383 DOI: 10.1161/atvbaha.107.147868] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVES Enhanced osteoclastogenesis, increased bone resorption, and osteoporosis have been reported in osteoprotegerin-deficient (OPG (-/-)) mice. OPG (-/-) mice available in Japan usually do not show vascular calcification. We have found that arterial calcification can be quickly induced by a simple procedure in OPG (-/-) mice. METHODS AND RESULTS Male OPG (-/-), OPG (+/-), and OPG (+/+) mice were fed a high phosphate diet from 6 to 10 weeks after birth, and then 1alpha,25-dihydroxyvitamin D3 (calcitriol) was injected for 3 days. We found that severe calcification developed in the media of the aorta in OPG (-/-) mice. Under electron microscopy, calcium deposits were observed in the cytoplasm and extracellular matrix of vascular smooth muscle cells (VSMCs). Neither apoptosis of VSMCs nor infiltration of macrophages was observed. Alkaline phosphatase (ALP) activity of aortic tissue correlated with the calcified lesion area. Mouse aorta and bone extracts revealed an identical pattern by ALP electrophoresis. CONCLUSIONS Our results demonstrated that OPG had anticalcification activity in the aorta, probably through the downregulation of ALP activity. Because the time course of arterial calcification after the injection of calcitriol is accurate and reproducible, this mouse model will be useful for further investigation of vascular calcification.
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Affiliation(s)
- Yuichi Orita
- Department of Molecular and Internal Medicine, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan
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27
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Mizobuchi M, Finch JL, Martin DR, Slatopolsky E. Differential effects of vitamin D receptor activators on vascular calcification in uremic rats. Kidney Int 2007; 72:709-15. [PMID: 17597697 DOI: 10.1038/sj.ki.5002406] [Citation(s) in RCA: 172] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Vascular calcification is associated with cardiovascular disease, the most common cause of death in chronic kidney disease (CKD). Patients with CKD are treated with vitamin D receptor activators (VDRAs); therefore, we determined if this treatment affects vascular calcification. Uremic rats were given vehicle, calcitriol, paricalcitol, or doxercalciferol three times a week for 1 month. Calcitriol significantly increased the serum calcium-phosphate product and aortic calcium content. Paricalcitol had no effect but the same dose of doxercalciferol significantly increased the calcium-phosphate product and the aortic calcium content, the latter being confirmed by von Kossa staining. To see if the increased aortic calcium was due to an increased serum calcium-phosphate product or to a differential effect of the two VDRAs, we lowered the dose of doxercalciferol and increased the dose of paricalcitol. A lower doxercalciferol did not increase the calcium-phosphate product but increased the aortic calcium content. A higher dose of paricalcitol still had no effect. Doxercalciferol treatment increased the mRNA and protein expression of the bone-related markers Runx2 and osteocalcin in the aorta, whereas paricalcitol did not. Hence, different VDRAs have different effects on vascular calcification in uremic rats. The effects are independent of the serum calcium-phosphate product suggesting independent mechanisms.
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Affiliation(s)
- M Mizobuchi
- Renal Division, Washington University School of Medicine, St Louis, Missouri 63110, USA
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28
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Abstract
The biological processes governing vascular endothelial cell health are complex and highly redundant. The mechanisms involved in cell injury and repair remain an area of intense study. This paper attempts to review current knowledge regarding hormones such as vitamin D, erythropoietin and aldosterone within the context of what we understand of the inflammatory cascade. This is not a comprehensive review of vascular biology, and many important details and background information have been omitted due to space and complexity considerations. The integration of exocrine and endocrine functions within the kidney, the intimate relationship of those functions with vascular health, and the clinical observations of high prevalence of cardiovascular disease in chronic kidney disease warrant a better understanding of this area by clinicians and basic researchers.
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Affiliation(s)
- Adeera Levin
- University of British Columbia, St. Paul's Hospital, Vancouver, Canada.
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29
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Wolisi GO, Moe SM. VITAMIN D IN HEALTH AND DISEASE: The Role of Vitamin D in Vascular Calcification in Chronic Kidney Disease. Semin Dial 2005; 18:307-14. [PMID: 16076354 DOI: 10.1111/j.1525-139x.2005.18407.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Vascular calcification is a significant cause of morbidity and mortality in patients with chronic kidney disease (CKD). Disorders of mineral metabolism are likely involved in the pathogenesis of vascular calcification. Calcitriol and its analogs are effective in suppressing parathyroid hormone levels in patients with secondary hyperparathyroidism and CKD, but experimental studies demonstrate that these drugs can act directly on vascular smooth muscle cells. In some in vitro studies and in animal models of CKD, calcitriol has induced vascular calcification. Newer analogs of vitamin D appear to be less likely to induce vascular calcification, although published data are scarce. However, there is really no clear evidence in dialysis patients that calcitriol or analog administration is directly responsible for the induction of vascular calcification. However, indirectly, by oversuppression of parathyroid hormone (PTH) and induction of a low-turnover bone disease state, or by increased calcium-phosphorus product, the administration of calcitriol or its analogs may contribute to vascular calcification in patients with CKD. However, prospective randomized trials in CKD patients are necessary to fully understand the impact of calcitriol and analog therapy on vascular calcification.
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Affiliation(s)
- Godwin O Wolisi
- Indiana University School of Medicine, Indianapolis, IN 46202, USA
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30
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Somjen D, Weisman Y, Kohen F, Gayer B, Limor R, Sharon O, Jaccard N, Knoll E, Stern N. 25-hydroxyvitamin D3-1alpha-hydroxylase is expressed in human vascular smooth muscle cells and is upregulated by parathyroid hormone and estrogenic compounds. Circulation 2005; 111:1666-71. [PMID: 15795327 DOI: 10.1161/01.cir.0000160353.27927.70] [Citation(s) in RCA: 252] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND 1,25(OH)2 vitamin D3 exerts multiple effects in human vascular smooth muscle cells (VSMCs). We therefore tested the possibility that VSMCs possess an endogenous 25-hydroxyvitamin D3-1alpha-hydroxylase system, the final enzyme in the biosynthetic pathway of 1,25(OH)2D3. METHODS AND RESULTS We assessed the expression and activity of 25-hydroxyvitamin D3-1alpha-hydroxylase by real-time polymerase chain reaction and the conversion of 25(OH)D3 into 1,25(OH)2D3. First, 25-hydroxyvitamin D3-1alpha-hydroxylase mRNA was identified in cultured VSMCs by real-time polymerase chain reaction. Second, in cells treated daily (3 days) with parathyroid hormone (66 nmol/L), estradiol-17beta (30 nmol/L), raloxifene (3 micromol/L), and the phytoestrogens genistein (3 micromol/L), biochainin A (3 micromol/L), and 6-carboxy biochainin A (30 nmol/L), 25-hydroxyvitamin D3-1alpha-hydroxylase mRNA increased by 43+/-13%, (P<0.05) 7+/-24% (P=NS), 176+/-28% (P<0.01), 65+/-11% (P<0.05), 152+/-24% (P<0.01), and 71+/-9% (P<0.05), respectively. Third, production of 1,25(OH)2D3 from 25(OH)D3 was seen with a Km of 25 ng/mL and increased dose dependently after treatment with parathyroid hormone, genistein, and the phytosetrogen derivative 6-carboxy biochainin A. Estradiol-17beta and biochainin A also increased the generation of 1,25(OH)2D3 by 40+/-23% (P<0.05) and 55+/-13% (P<0.05), respectively. CONCLUSIONS We provide here the first evidence for the expression of an enzymatically active 25(OH)D3-1alpha-hydroxylase system in human VSMCs, which can be upregulated by parathyroid hormone and estrogenic compounds. Because exogenous vitamin D inhibits VSMC proliferation, the role of this system as an autocrine mechanism to curb changes in VSMC proliferation and phenotype is a subject for future investigation.
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Affiliation(s)
- Dalia Somjen
- Institute of Endocrinology, Metabolism and Hypertension, Tel Aviv Sourasky Medical Center ,and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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31
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Hörl WH, Cohen JJ, Harrington JT, Madias NE, Zusman CJ. Atherosclerosis and uremic retention solutes. Kidney Int 2004; 66:1719-31. [PMID: 15458484 DOI: 10.1111/j.1523-1755.2004.00944.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Walter H Hörl
- Division of Nephrology, Department of Medicine III, Medical University of Vienna, Vienna, Austria.
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Foote MR, Horst RL, Huff-Lonergan EJ, Trenkle AH, Parrish FC, Beitz DC. The use of vitamin D3 and its metabolites to improve beef tenderness. J Anim Sci 2004; 82:242-9. [PMID: 14753368 DOI: 10.2527/2004.821242x] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Three experiments were conducted to determine whether feeding 25-hydroxyvitamin D3 (25-OH D3) or 1,25-dihydroxyvitamin D3 (1,25-(OH)2 D3) improves the tenderness of longissimus dorsi (LD), semimembranosus (SM), and infraspinatus (IF) muscles similar to supplemental vitamin D3 without leaving residual vitamin D3 and its metabolites in muscle. In the first two experiments, 24 crossbred steers were used to determine the effects of different oral amounts of 1,25-(OH)2 D3 (Exp. 1; n = 12) and 25-OH D3 (Exp. 2; n = 12) on plasma Ca2+ concentrations. In the third experiment, crossbred steers were allotted randomly to one of four treatments: 1) control placebo (n = 7); 2) 5 x 10(6) IU of vitamin D3/d (n = 9) for 9 d and harvested 2 d after last treatment; 3) single, 125-mg dose of 25-OH D3 (n = 8) 4 d before harvest; or 4) single, 500-microg dose of 1,25-(OH)2 D3 (n = 9) 3 d before harvest. The LD and SM steaks from each animal were aged for 8, 14, or 21 d, whereas steaks from the IF were aged for 14 or 21 d. All steaks were analyzed for tenderness by Warner-Bratzler shear force and for troponin-T degradation by Western blot analysis. Supplementing steers with vitamin D3 increased (P < 0.01) the concentration of vitamin D3 and 25-OH D3 in all muscles sampled. Feeding steers 25-OH D3 increased (P < 0.05) the concentration of 25-OH D3 in meat, but to an amount less than half that of cattle treated with vitamin D3. Supplemental 1,25-(OH)2 D3 did not affect (P < 0.10) shear force values; however, there was a trend (P < 0.10) for supplemental vitamin D3 and 25-OH D3 to produce LD steaks with lower shear values after 8 and 14 d of aging, and lower (P < 0.10) shear force values for the SM aged for 21 d. Analysis of Western blots indicated that LD steaks from cattle supplemented with vitamin D3 and 25-OH D3 had greater (P < 0.05) troponin-T degradation. Antemortem supplementation of 25-OH D3 seems to increase postmortem proteolysis and tenderness in the LD and SM without depositing large concentrations of residual vitamin D3 and its metabolite 25-OH D3.
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Affiliation(s)
- M R Foote
- Department of Animal Science, Iowa State University, Ames 50011, USA
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